bonding plastic water mains entering building

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hbeery10

hbeery10

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Sardis, Ohio
I work for a company that does both electrical engineering and electrical contracting. I mainly do the electrical install work (commercial/industrial). This morning I had a discussion with one of the electrical engineers at the company. He was saying that when you have a plastic water main coming into the building you need to install a metal fitting on the plastic pipe at some point after entering the building and bond the fitting so that the water inside the pipe is bonded/grounded. Is that correct?

Thanks,
Garth
 
Yes, but you must use at least 75 lb nylon fishing line for the connection.:)

Actually no, but if there is metallic piping in the building you should bond it with real wire if it has the possibility of being energized. see 250.4(A)(4).

You do "bond" to the water in swimming pools. see 680.26(C)
 
fmtjfw said:
Yes, but you must use at least 75 lb nylon fishing line for the connection.:)

Actually no, but if there is metallic piping in the building you should bond it with real wire if it has the possibility of being energized. see 250.4(A)(4).

You do "bond" to the water in swimming pools. see 680.26(C)
Click to expand...

Thanks. We did discuss bonding any metallic piping with the possibility of becoming energized but lacked a code reference. One of the reasons they had on bonding the water in the plastic water line was because we have to do that in a swimming pool. I was aware of the swimming pool bonding requirement, but was skeptical of the water in the water line.

Garth
 
What do you use for a GEC when you have a plastic name? I never had that before


In belief, man can do anything
 
hbeery10 said:
Thanks. We did discuss bonding any metallic piping with the possibility of becoming energized but lacked a code reference. One of the reasons they had on bonding the water in the plastic water line was because we have to do that in a swimming pool. I was aware of the swimming pool bonding requirement, but was skeptical of the water in the water line.

Garth
Click to expand...

There is no requirement to bond the water in the building water system. There also is no requirement to bond isolated section(s) of metal water pipe either as they do not fall under a metal piping system.
 
So if there is no water entrance what is the real GEC it's now just the rod there's no you for there's no building steel there's no cold water pipe sizes of two ground rods separated by 6 feet and that's my whole grounding electrode conductor and I have to bring a bonding wire to the gas pipe from the ground rod. Inspectors here like to go all the way to the gas entrance of their ensure there's no Tributary lime seven specters let you just do it at the water heater I never had clarity on that is there a rule a code requirement to bond the gas only where you can see it's part of the main line working and on the gas pipe at the water heater or any convenient location??


In belief, man can do anything
 
Thanks for the translation Siri :)
Do you have to bond the gas pipe to the GeC
Where you can see that it's the mainline or
can you bond the gas pipe at the water eater even if that's remotes from the main?


In belief, man can do anything
 
Currently, with regard to CSST, there is a conflict between the National Fuel Gas Code and the National Electrical Code.

National Fuel Gas Code (2009)

CSST gas piping systems shall be bonded to the electrical service grounding electrode system at the point where the gas service enters the building. The bonding jumper shall not be smaller than 6 AWG copper wire or equivalent. (7.13.2)

National Electrical Code (2011)

If installed in, or attached to, a building or structure, a metal piping system(s), including gas piping, that is likely to become energized shall be bonded to the service equipment enclosure; the grounded conductor at the service; the grounding electrode conductor, if of sufficient size; or to one or more grounding electrodes used. The bonding conductor(s) or jumper(s) shall be sized in accordance with 250.122, using the rating of the circuit that is likely to energize the piping system(s). The equipment grounding conductor for the circuit that is likely to energize the piping shall be permitted to serve as the bonding means. (250.104(B))


In belief, man can do anything
 
CSST and the black iron are two different issues. The Csst must be bonded as the gas code requires but if there isn't any CSST then the equipment grounding conductor from any equipment that uses gas- ie, the gas furnace or gas stove then there is no need to install anything else
 
That's good to have clarification because in San Francisco there must be a local code they always make you bond the gas way back at the gas main even if it's black iron

Then the gas to the cold to the hot water heater also

I'm used to doing it for them that way and now I'm in another jurisdiction then want to know what I can expect


In belief, man can do anything
 
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